| /* |
| * Copyright (c) 2014 Fujitsu Ltd. |
| * Author: Zeng Linggang <zenglg.jy@cn.fujitsu.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program. |
| */ |
| /* |
| * Test that linkat() fails and sets the proper errno values. |
| */ |
| |
| #define _GNU_SOURCE |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <error.h> |
| #include <stdlib.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <pwd.h> |
| #include <sys/mount.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| #include "linux_syscall_numbers.h" |
| #include "safe_macros.h" |
| #include "lapi/fcntl.h" |
| |
| #define DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \ |
| S_IXGRP|S_IROTH|S_IXOTH) |
| #define TEST_FILE "testfile" |
| #define TEST_EXIST "testexist" |
| #define TEST_ELOOP "testeloop" |
| #define TEST_EACCES "./tmp/testeeacces" |
| #define TEST_EACCES2 "./tmp/testeeacces2" |
| #define TEST_EROFS "mntpoint" |
| #define TEST_EROFS2 "mntpoint/testerofs2" |
| #define TEST_EMLINK "emlink_dir/testfile0" |
| #define TEST_EMLINK2 "emlink_dir/testfile" |
| #define BASENAME "mntpoint/basename" |
| |
| static char nametoolong[PATH_MAX+2]; |
| static const char *device; |
| static int mount_flag; |
| static int max_hardlinks; |
| static const char *fs_type; |
| |
| static void setup(void); |
| static void cleanup(void); |
| static void setup_eacces(void); |
| static void cleanup_eacces(void); |
| static void setup_erofs(void); |
| |
| static struct test_struct { |
| const char *oldfname; |
| const char *newfname; |
| int flags; |
| int expected_errno; |
| void (*setupfunc) (void); |
| void (*cleanfunc) (void); |
| } test_cases[] = { |
| {TEST_FILE, nametoolong, 0, ENAMETOOLONG, NULL, NULL}, |
| {nametoolong, TEST_FILE, 0, ENAMETOOLONG, NULL, NULL}, |
| {TEST_EXIST, TEST_EXIST, 0, EEXIST, NULL, NULL}, |
| {TEST_ELOOP, TEST_FILE, AT_SYMLINK_FOLLOW, ELOOP, NULL, NULL}, |
| {TEST_EACCES, TEST_EACCES2, 0, EACCES, setup_eacces, cleanup_eacces}, |
| {TEST_EROFS, TEST_EROFS2, 0, EROFS, setup_erofs, NULL}, |
| {TEST_EMLINK, TEST_EMLINK2, 0, EMLINK, NULL, NULL}, |
| }; |
| |
| char *TCID = "linkat02"; |
| int TST_TOTAL = ARRAY_SIZE(test_cases); |
| |
| static struct passwd *ltpuser; |
| static void linkat_verify(const struct test_struct *); |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| const char *msg; |
| int i; |
| |
| msg = parse_opts(ac, av, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| for (i = 0; i < TST_TOTAL; i++) |
| linkat_verify(&test_cases[i]); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void linkat_verify(const struct test_struct *desc) |
| { |
| if (desc->expected_errno == EMLINK && max_hardlinks == 0) { |
| tst_resm(TCONF, "EMLINK test is not appropriate"); |
| return; |
| } |
| |
| if (desc->setupfunc != NULL) { |
| desc->setupfunc(); |
| } |
| |
| TEST(ltp_syscall(__NR_linkat, AT_FDCWD, desc->oldfname, |
| AT_FDCWD, desc->newfname, desc->flags)); |
| |
| if (desc->cleanfunc != NULL) |
| desc->cleanfunc(); |
| |
| if (TEST_RETURN != -1) { |
| tst_resm(TFAIL, |
| "linkat(""AT_FDCWD"", %s, ""AT_FDCWD"", %s, %d)" |
| "succeeded unexpectedly", desc->oldfname, |
| desc->newfname, desc->flags); |
| return; |
| } |
| |
| if (TEST_ERRNO == desc->expected_errno) { |
| tst_resm(TPASS | TTERRNO, "linkat failed as expected"); |
| } else { |
| tst_resm(TFAIL | TTERRNO, |
| "linkat failed unexpectedly; expected: " |
| "%d - %s", desc->expected_errno, |
| strerror(desc->expected_errno)); |
| } |
| } |
| |
| static void setup(void) |
| { |
| if ((tst_kvercmp(2, 6, 16)) < 0) |
| tst_brkm(TCONF, NULL, "This test needs kernel 2.6.16 or newer"); |
| |
| tst_require_root(NULL); |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| tst_tmpdir(); |
| |
| fs_type = tst_dev_fs_type(); |
| device = tst_acquire_device(cleanup); |
| |
| if (!device) |
| tst_brkm(TCONF, cleanup, "Failed to acquire device"); |
| |
| TEST_PAUSE; |
| |
| ltpuser = SAFE_GETPWNAM(cleanup, "nobody"); |
| |
| SAFE_TOUCH(cleanup, TEST_FILE, 0644, NULL); |
| |
| memset(nametoolong, 'a', PATH_MAX+1); |
| |
| SAFE_TOUCH(cleanup, TEST_EXIST, 0644, NULL); |
| |
| SAFE_SYMLINK(cleanup, TEST_ELOOP, "test_file_eloop2"); |
| SAFE_SYMLINK(cleanup, "test_file_eloop2", TEST_ELOOP); |
| |
| SAFE_MKDIR(cleanup, "./tmp", DIR_MODE); |
| SAFE_TOUCH(cleanup, TEST_EACCES, 0666, NULL); |
| |
| tst_mkfs(cleanup, device, fs_type, NULL); |
| SAFE_MKDIR(cleanup, "mntpoint", DIR_MODE); |
| |
| if (mount(device, "mntpoint", fs_type, 0, NULL) < 0) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "mount device:%s failed", device); |
| } |
| mount_flag = 1; |
| |
| max_hardlinks = tst_fs_fill_hardlinks(cleanup, "emlink_dir"); |
| } |
| |
| static void setup_eacces(void) |
| { |
| SAFE_SETEUID(cleanup, ltpuser->pw_uid); |
| } |
| |
| static void cleanup_eacces(void) |
| { |
| SAFE_SETEUID(cleanup, 0); |
| } |
| |
| static void setup_erofs(void) |
| { |
| if (mount(device, "mntpoint", fs_type, |
| MS_REMOUNT | MS_RDONLY, NULL) < 0) { |
| tst_brkm(TBROK | TERRNO, cleanup, "remount device:%s failed", |
| device); |
| } |
| mount_flag = 1; |
| } |
| |
| static void cleanup(void) |
| { |
| if (mount_flag && tst_umount("mntpoint") < 0) |
| tst_resm(TWARN | TERRNO, "umount device:%s failed", device); |
| |
| if (device) |
| tst_release_device(NULL, device); |
| |
| tst_rmdir(); |
| } |